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A finger on the controller keypad of a reach-in cabinet, the display dark.

Safe checks with the unit off

Troubleshooting
guides.

The checks an owner or manager can make safely, from the breaker, the gas valve, the water supply and the drain to door gaskets, coils, strainers, lint screens and the data plate, and where to stop and book.

(844) 571-4566

Mon–Sat, 8am–8pm

  • Three guides
  • Read before you book
  • Says where to stop

Book a visit

Three short steps, about a minute.

or call (844) 571-4566

Troubleshooting,
guide by guide.

This section is for the manager standing in front of a unit that has stopped, slowed or started beeping, deciding whether to book now or after close. The guides cover the checks that need no tools and carry no risk: breakers and disconnects, the valve handle at a gas appliance, water supply and drains, grilles, strainers and screens, the message on the controller and the plate that identifies the unit.

All 18 guides
A restaurant manager seen from behind crouching at a row of stainless commercial reach-in cabinets, the front grille of one reach-in removed and leaning on the tiled wall to show a dusty condenser coil, a flashlight and a clipboard on the stainless prep table nearby, a plain gray electrical disconnect box on the wall with its lever down, nothing outdoors.
5-minute read

Commercial appliance checks a manager can run before the service call

Breakers and disconnects, the valve handle at each gas unit, fill and drain, grilles, strainers and screens, then the message on the controller. What to photograph, and where a manager's part ends.

The glowing touch screen of a stainless commercial combi oven on a restaurant cooking line showing a plain red warning triangle and no readable text, the combi oven's glass door closed on a tray of roasting vegetables, a cook seen from the shoulders down in a white jacket reaching toward the screen, stainless fryers softly out of focus beside it, nothing outdoors.
5-minute read

What controller alarms on commercial equipment are asking for: keep going, clean or shut down

Prompts, warnings and stops on fryers, combis, dish machines, reach-ins and laundry controls. Which messages Rational lets you cook through, defrost readings that look warm, and alarms someone switched off.

The open lower door of a stainless commercial gas fryer on a restaurant cooking line, a blank riveted metal data plate with no readable marks inside the fryer door lit by a small flashlight held in a hand seen only to the wrist, the fryer's cooled oil vat and a hanging basket just visible above, nothing outdoors.
5-minute read

Where the data plate hides on restaurant equipment: fryer doors, cabinet corners and the screen

Model, serial, supply and gas type, and every maker puts them somewhere else. Traulsen and Victory reach-ins, fryer doors, a Hobart door top, a Blodgett control compartment, a Rational settings screen and a walk-in's several plates.

Safe checks with the unit off.

They apply across the four families we look after: cold rooms and cabinets, cooking equipment, warewashing and laundry. The same observation means different things on each, so a dark display on a reach-in points one way and on a dish machine another, and the guides say where the families differ.

Every check is ordered by cost and safety, the free ones first, and each guide shows what to write down as you go. A clear record of what was seen, reset and cleaned is worth more to the technician than a panel that has already been taken off, and it often turns a two-trip repair into one.

Each guide also marks the line. Gas fittings and quick disconnects, refrigerant lines, panels over live wiring, the inside of a fryer vat and the drum of a laundry machine are outside what an owner or crew member should touch; once a check would call for a tool, a removed cover or a disconnected line, it is time to book.

Not sure where to start?

The short answerCommercial appliance checks a manager can run before the service call

Commercial equipment troubleshooting at manager level covers the breaker and disconnect, the gas valve at the unit, the water supply and drain, door gaskets, condenser grilles, strainers, crumb and lint screens, and the message on the controller.

The short answerWhat controller alarms on commercial equipment are asking for: keep going, clean or shut down

Commercial kitchen equipment alarms fall into three groups: routine prompts such as filtering oil, deliming or refilling a chemical drum; temperature and door warnings that call for a check; and protective stops for probes, high-limits, ignition or water supply.

The short answerWhere the data plate hides on restaurant equipment: fryer doors, cabinet corners and the screen

A commercial equipment data plate lists the model and serial number, the electrical supply, and the fuel on gas-fired units.

When reading
is not enough.

If the checks in these guides did not settle it, the visit picks up from there, stop by stop.

What repairs cost
  1. 01Safety and supply before anything else
  2. 02The cause, and what it costs
  3. 03Parts that ride along
  4. 04Proved under load before we leave

The problems
these answer.

Each has a page of its own, with the causes in the order worth checking.

All 17 problems
Close view of the dark touch control panel on the front of a stainless combi oven in a commercial kitchen, one abstract amber warning indicator glowing among unlit icons, the steam-fogged glass door blurred beside it. Problem

Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display

8 causes, cheapest first

 A thin wisp of gray smoke rising from the lower grille of a stainless reach-in cabinet standing beside a commercial fryer line, the reach-in doors closed, the kitchen lights on and the line empty. Gas, fire, food at risk or water near power

Restaurant Equipment Burning Smell: Scorched Oil, Hot Wiring or Lint

6 causes, cheapest first

 An empty stainless restaurant cooking line after hours, every burner on the fryers and griddle dark and cold, a yellow gas shutoff handle on the pipe behind the line turned crosswise to closed, the back door of the commercial kitchen propped open to the night. Gas, fire, food at risk or water near power

Commercial Kitchen Gas Smell Along the Cooking Line: Clear the Room First

6 causes, cheapest first

 A two-door stainless reach-in cabinet in a busy commercial kitchen, one door standing slightly ajar with a torn gray gasket at the hinge edge, shelves inside crowded with food pans pressed to the back, a probe thermometer resting on the top shelf. Problem

Reach-In Cooler Not Holding Temperature Through a Shift

6 causes, cheapest first
A restaurant team working a busy commercial kitchen line.
For the heart of your home.

Questions about
troubleshooting.

Which of these guides should come first?
The general checks guide. It runs through power, gas, water, air and the screen in that order, and sends you to the alarm or data plate guide once you know what the unit is telling you.
Does the equipment have to be off for these checks?
For anything touching a coil, a strainer or a screen, yes. Reading a display, a thermometer or a plate works with the unit running, and the guides say which is which.
Will a manager's checks affect the maker's warranty?
Not if they stay within the owner's section of the manual: cleaning, clearing screens, resetting a breaker once. Opening sealed components or removing a data plate can, and the guides steer clear of both.
What if a check finds the cause?
Log it anyway and add it to the closing or weekly checklist. A strainer, a lint screen or a propped door that caused one call will cause the next one too.

The other
sections.

Split by what you are trying to find out rather than by which part of the appliance it concerns.

All guides
A thermometer on a walk-in cooler shelf reading warm, seen close.
What the box, the vat and the drum are telling you

Common problems

A soft brush and a shop vacuum at the condenser grille of a reach-in cabinet, the unit off.
A maintenance plan that keeps the line running

Maintenance and prevention

A Class K extinguisher mounted beside a fryer line under a hood.
Gas, fryer fires, safe holding and the health inspector

Gas, fire and food safety

A combi oven and a convection oven side by side on a restaurant line.
Gas or electric, repair or replace, lease or buy

Choosing and comparing

A gas quick-disconnect hose and a restraining cable behind a commercial fryer.
Clearances, utilities, drains and airflow

Installation and setup

Not sure which section?

Start from your question

The four questions most visits start with, each with the guide that answers it.

18 guidesWhere to start Where to start

Back to your everyday

Let’s get your commercial appliance working again.

Three short steps online, or one call. Tell us what you are seeing and pick a window that works.

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